• 35mm 847.3mm2
  • 24.2 megapixels
  • ISO 100 - 51,200
  • 35mm 858.0mm2
  • 24.6 megapixels
  • ISO 100 - 25,600

Buy From

Differences

Sony A7 III advantages over Sigma fp

  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Higher max flash sync
    1/250 vs 1/30 sec
    Reduce the effect of ambient light in flash shots
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Bigger JPEG buffer
    163 vs 12 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    33 vs 12 shots
    Larger buffer for RAW shots (burst mode)
  • Higher extended ISO
    204800 vs 102400 ISO
    Higher extended ISO can give more low-light flexibility

Sigma fp advantages over Sony A7 III

  • Thinner
    45 mm vs 73 mm
    Thinner
  • More dots on screen
    2100k vs 922k dots
    Can mean greater resolution or a brighter screen
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Faster JPEG shooting
    18.0 fps vs 9.9 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    18.0 fps vs 9.7 fps
    Faster RAW shooting in burst mode

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera

User reviews

Buy From

Your purchases support this site

Buy the Sony A7 III
Body Only
  • Body Only
  • Kit with 28-70mm Lens
All A7 III Deals

Your purchases support this site

Buy the Sigma fp
Body Only
  • Body Only
  • Kit with 45mm f/2.8 lens
All fp Deals

Review Excerpt

  • New 24MP sensor offers excellent image quality; Outstanding high ISO performance and dynamic range; Improved JPEG colors; Improved build quality; Fast autofocus; Excellent 4K video; Very good battery life.

  • Buffer clearing can be slow even with fast UHS-II cards; UHS-II support only on one card slot; No losslessly compressed RAW option; Dedicated battery charger not included; Menus are still confusing; No built-in flash.

  • Read our Sony A7 III Review

The Competition

Compared to Sony A7 II

Sony A7 III
Sony A7 II
  • $1531
  • 35mm
  • Shoot 4K video
  • Touchscreen
  • $1148
  • 35mm
  • In-camera panoramas

Compare Sony A7 III vs Sony A7 II

Sigma fp
Sony A7 II
  • $1699
  • 35mm
  • Shoot 4K video
  • Touchscreen
  • $1148
  • 35mm
  • Eye-level viewfinder
  • In-camera panoramas

Compare Sigma fp vs Sony A7 II

Compared to Nikon Z6

Sony A7 III
Nikon Z6
  • $1531
  • 35mm
  • Less expensive
  • NFC
  • $1396
  • 35mm
  • Top deck display
  • More dots on screen

Compare Sony A7 III vs Nikon Z6

Sigma fp
Nikon Z6
  • $1699
  • 35mm
  • Less expensive
  • Thinner
  • $1396
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen

Compare Sigma fp vs Nikon Z6

Compared to Sony A7C

Sony A7 III
Sony A7C
  • $1531
  • 35mm
  • Less expensive
  • More telephoto lens reach
  • $1598
  • 35mm
  • Tilt-swivel screen
  • Newer

Compare Sony A7 III vs Sony A7C

Sigma fp
Sony A7C
  • $1699
  • 35mm
  • Thinner
  • More dots on screen
  • $1598
  • 35mm
  • Tilt-swivel screen
  • Eye-level viewfinder

Compare Sigma fp vs Sony A7C

Compared to Nikon Z6 II

Sony A7 III
Nikon Z6 II
  • $1531
  • 35mm
  • Less expensive
  • NFC
  • $1747
  • 35mm
  • Top deck display
  • Newer

Compare Sony A7 III vs Nikon Z6 II

Sigma fp
Nikon Z6 II
  • $1699
  • 35mm
  • Less expensive
  • Thinner
  • $1747
  • 35mm
  • Eye-level viewfinder
  • Tiltable Screen

Compare Sigma fp vs Nikon Z6 II

Compared to Sigma fp L

Sony A7 III
Sigma fp L
  • $1531
  • 35mm
  • Eye-level viewfinder
  • Bigger pixels
  • $2499
  • 35mm
  • Thinner
  • Newer

Compare Sony A7 III vs Sigma fp L

Sigma fp
Sigma fp L
  • $1699
  • 35mm
  • Bigger pixels
  • Higher max flash sync
  • $2499
  • 35mm
  • More pixels
  • Has anti-aliasing filter

Compare Sigma fp vs Sigma fp L

Compare Other Cameras?